ACL 7M1397H-STD Main Bearing Set for BMW N54, N55, and S55 3.0L Engines

Regular price: $308.95
Regular price
Sale price: $308.95

Shipping calculated at checkout.

In Stock: 50

Orders by 1pm PST ship same business day

Free Shipping w/3-4 Day Delivery

Authorized Dealer

Fitment Guarantee

30-Day Hassle Free Returns

Product Specification:

SKU:ACL7M1397H-STD

MPN: 7M1397H-STD

UPC: 9315726463062

Weight: 1.2 lb

Inventory: 50

Type: Bearings

Vehicle Fitment

2011-2018 BMW 135i, 335i, 435i (N54, N55)
2012-2019 BMW 640i, 740i, 740Li (N55)
2012-2019 BMW X5 xDrive35i, X6 xDrive35i (N55)
2015-2019 BMW M2, M3, M4 (S55)

Features

Trimetal construction with steel back, copper-lead, and overlay
Enhanced bearing eccentricity for improved oil retention
Increased crush for better bearing retention
Extended grooves to optimize oil flow
Enlarged I.D. chamfers for improved fitment
Extra oil clearance of 0.001" for high-performance applications
Designed for both naturally aspirated and turbocharged engines
Suitable for street and motorsport applications

Specifications

Width: 0.949 in.
Outside Diameter: 2.3094 in. (Upper), 2.3089 in. (Lower)
Shaft Diameter: 2.1636 in. (Upper), 2.1631 in. (Lower)
Material: Trimetal (Steel back, copper-lead, overlay)
Compatibility: Standard size for OEM crankshafts
Oil Clearance: +0.001" extra clearance

Included Components

1x ACL 7M1397H-STD Main Bearing Set

Product Description

The ACL 7M1397H-STD Main Bearing Set is engineered to provide superior performance and reliability for BMW's N54, N55, and S55 3.0L engines. Whether you're building a high-performance street engine or restoring your daily driver, these bearings offer the durability needed to withstand the rigors of high RPM operation.

Constructed with a trimetal design, the ACL bearings feature a high-strength overlay plate that reduces thickness for improved fatigue resistance. The hardened steel backs enhance bearing retention, while increased crush improves overall stability. These bearings are designed to fit standard OEM crankshafts, ensuring a hassle-free installation.

Ideal for both naturally aspirated and turbocharged applications, the ACL 7M1397H-STD bearings are a trusted choice for enthusiasts seeking performance and longevity.